"How so, Senor Dobbs?"

"I'll start at the beginning and describe what I think happened," my uncle replied. "Mustapha can correct me if I go wrong on details. But let's go and sit on the veranda, as this will take some time."

On the veranda my uncle resumed, "There are really two parts to the Indian Rope Trick-both universally considered impossible. The first is to make a rope rise miraculously in the air. The second is to make the boy suddenly disappear from the top and have him reappear at a distant spot.

"There can be no doubt that this morning something like a rope really did rise in the air the photographs prove it. Now, there is no way to make a rope do that, but this 'rope' must have had as a core either a wire or chain of magnetic metal. Isn't that so Mustapha?"

Receiving a nod, my uncle continued, "The fact that both Jimmy's watch and mine behaved erratically could mean only one thing that they had been exposed to a strong magnetic field and had become magnetized. This gave me the clue. As you know, while opposite poles of a magnet attract each other, similar poles repel each other with equal force. I remember at the exposition in San Francisco in 1939 seeing an exhibit where a metal bowl was made to float in the air by a powerful electro-magnetic field underneath. Later I read that mediums used this method to make metal tables rise from the floor during fake seances. Perhaps Dr Marlin first got his idea there."

Mustapha nodded again, as my uncle continued, "Dr Marlin made his 'rope' a chain or wire of highly magnetized metal covered with a thin layer of hemp. Under the ground in the field he had built a very large system of electro-magnets designed to project a cone of force. When the current was turned on magnetic repulsion raised the 'rope' above the ground as if by magic."

"But, Uncle Edward," I objected, "if it's as easy as that, why hasn't someone done it before?"

"It's far from easy, Jimmy. As the 'rope' rises above the ground, the magnetic force diminishes very rapidly. To raise a 'rope' twenty feet takes something like a baby cyclotron. Making one would take years of work and cost a small fortune."

"Three years and fifty thousand dollars," Mustapha broke in. "At least so Dr Marlin told me. But the reward was enormous."

"But what happened to Ali; how did he vanish from the top of the rope?" I asked.

"Let's take things in order," my uncle said. "When we arrived yesterday, Dr Marlin took us to the field to watch the pouring of the concrete. The real reason for the pavement was to keep us from digging later and finding the electro-magnets. Dr Marlin also introduced us to his two a.s.sistants, supposedly from India. Where do you really come from, Mustapha?"

"From Mexico City, Senor. Ali and I have had a Hindu act for some time."

"You might have chosen better names," said my uncle." 'Mustapha' and 'Ali' sound more like Mohammedans than Hindus . . . To come to this morning. At the start of the demonstration Mustapha, Ali, and Dr Marlin were all present on the pavement. But that was the last time the three were really together until we found Ali in the water.

"Dr Marlin 'forgot' his ink-pad, and we three, with Ali, went to the laboratory to take the finger-prints. As soon as we had left, Mustapha produced the hollow dummy of himself from some hiding-place nearby (perhaps in the hedge) and arranged it in a sitting position on the pavement. Leaving it there, he, himself, ran up to the house.

"When we came back from the laboratory we never doubted that the dummy was Mustapha. (But remember, Jimmy, 'Mustapha never moved' when you gave that loud sneeze.) Dr Marlin and Ali rejoined 'him' on the pavement and closed all four curtains.

"Then Dr Marlin 'discovered' that the rope was 'defective' and sent 'Mustapha' for another one. What really happened was that the hollow dummy was placed on the cycle, and Ali crept inside it, came through the curtains and rode rapidly up to the house in the semblance of Mustapha. He had no trouble balancing on the tricycle; all he had to do was to sit still and steer. We never doubted that Ali was still behind the curtains, but, really, at that time Dr Marlin was there alone.

"When Ali reached the house, out of our sight, he emerged from the dummy, took it upstairs and hid it; while the real Mustapha walked back to the field, to give Ali more time, and 'returned' to us with another rope."

"But," I objected, "we saw Ali at the top of the rope."

"No, Jimmy, we only thought we did. After the real Mustapha rejoined Dr Marlin behind the curtains, he started a chanting wail while Dr Marlin pressed a concealed switch probably in one of the iron rods. This turned on the electro-magnets underneath and, as if by magic, the 'rope' rose in the air.

"Then either Dr Marlin or Mustapha brought from his pocket a collapsed rubber dummy which, when inflated, was an exact life-sized replica of Ali. Incidentally, that was why Ali had to shave his head. Hair would be hard to imitate, but the rubber looked just like dark skin.

"Instead of using air, Dr Marlin inflated the rubber dummy with helium. I don't know just how; did you have a small cylinder of it under your robe, Mustapha?"

"No, Senor, the helium was under pressure in a tank beneath the concrete. One of the iron rods was really a pipe with a concealed nozzle. It took only an instant to inflate the dummy, which looked exactly like Ali. Dr Marlin paid three thousand dollars to have it made by an expert in magical supplies in Mexico City."

"Next," continued my uncle, "Dr Marlin placed a loin-cloth on the figure to weigh it down in position, and attached the dummy with dark threads to the bottom of the 'rope'. Then he fired a blank cartridge, set fire to the curtains, and under cover of the dense smoke the released dummy, filled with helium and exactly weighted with a light ballast, rose to the top of the 'rope,' where the large knot prevented it from going higher. You must have used a very light loin-cloth, Mustapha?"

"Made of paper, Senor."

"I see. That instant must have been the trickiest part of the whole illusion. We might notice that 'Ali' was rising, not climbing. But the dense smoke and the thrashing about of the 'rope' caused by slight magnetic variations-entirely deceived us. Then, too, our critical faculties had just been almost paralysed by the miraculous rising of the 'rope.' After that we were in a state to see and believe almost anything. I don't say we would have been fooled a second time, but Dr Marlin only had to make the demonstration once."

"It certainly fooled me," I said.

"No more than me, Jimmy. Next the smoke cleared, and in the air above us we saw 'Ali' at the top of the rope not for long, but long enough to take photographs. Then Dr Marlin raised his pistol; but this time, instead of a blank he fired a real bullet, which pierced the dummy. The dummy instantly collapsed, and the shrunken rubber was drawn back inside the loin-cloth where we couldn't see it as it fell to the ground. Ali had vanished before our eyes! What happened to the paper loin-cloth, Mustapha?"

"I picked it up, Senor, and by sleight-of-hand exchanged it for a real one I had under my robe. I gave the real one to Dr Marlin, who handed it to you."

The police inspector broke in, "All this is most interesting, Senor Dobbs, but what about the murder?"

"We will come to that in a minute. The plan was that after the demonstration we should find Ali on the island-rematerialized there by magic-or rather by supra-normal powers. Apparently the only boat was still on this side, but there must have been another one hidden. Did it have a silent engine, Mustapha?"

"Yes, Senor, it was a small aluminium canoe with a battery and electric motor. Dr Marlin had it hidden, hung above the water, under the floor of the wharf. Ali was supposed to discard his loincloth, launch the canoe, cross to the island, and then sink the boat to complete the illusion."

"Now we come to the first death," my uncle said. "Just what happened, I don't know. My guess would be that before the demonstration Ali demanded more money than Dr Marlin wished to pay him. Mustapha, do you know about it?"

A look of misery crossed the bearded face. "I didn't, but I do now. The boy was too ambitious. Dr Marlin told me just before he himself died that Ali demanded half of the entire reward, instead of the ten thousand dollars apiece that we had been promised. He threatened to give the whole thing away to you if Dr Marlin didn't agree."

"So that was it," my uncle said. "No doubt he promised Ali everything, and then killed him before he could try to collect. Dr Marlin must have tampered with the boat."

"He boasted of it to me!" Mustapha cried angrily. "He opened a seam in the bottom and filled it with a plastic that would dissolve soon after Ali launched the canoe. It must have sunk about halfway across. But Ali was a better swimmer than Dr Marlin thought. He nearly managed to keep up until we came."

"Surely you suspected something afterwards?" my uncle asked.

"I did, Senor, but I wasn't sure. So I put the dummy of myself at the window while you two were in the dark-room, and went outside to have it out with Dr Marlin. He was ready for me though, and pulled a gun with a silencer out of his pocket. He told me how Ali had died, and then forced me to the edge of the cliff and tried to push me off-apparently a grief-stricken suicide. But he didn't know that I had a knife in my sleeve. I threw it and it pierced his heart. Then I lost my head, tossed his gun into the water, and ran back to my room to hide the dummy in the closet. I deeply regret, Senor, that I accused you, but I didn't think anyone would believe me."

"Don't worry, Mustapha," my uncle said. "The police, no doubt, will recover Dr Marlin's pistol and raise the canoe from the bay. That evidence will prove your story of self-defence. But it's fortunate for me that I happened to notice the magnetized watches. I suppose that Dr Marlin never thought of them giving the show away."

"Yes, he did, Senor; he thought of that as a remote possibility just before he sent the wire to you. We considered hiring someone to steal your watches in California, and having him bribe a jeweller to sell you non-magnetic ones. But Dr Marlin decided that it would take too much time. He was always afraid that someone else would claim the reward."

"Why," asked my uncle in surprise, "did he think some rival knew his secret?"

"No, Senor, and, besides, very few mediums would have enough money. But it's a strange thing all his life Dr Marlin had been a charlatan and a fraud, but always he believed that some of the other mediums were genuine. All the time he was getting things ready, he was afraid that some yogi from India, with genuine psychic powers, would appear and claim the reward by really demonstrating the Indian Rope Trick."

The Problem of

The Black Cloister

Edward D. Hoch Let us bow to the Master. No, not John d.i.c.kson Carr. Carr may have set the rules for the impossible crime story and created most of the templates, but Edward Hoch (b. 1930) has now written considerably more stories than Carr and created far more variations on old ideas as well as plenty of new ones. I never cease to be amazed at Hoch's output. He has now been selling short fiction for over fifty years and has had at least one story, sometimes more, in every issue of Ellery Queen's Mystery Magazine since May 1973. He's steadily creeping towards having written and published one thousand stories, and precious few living writers can say that. Of the eighteen or so new stories that Ed produces each year, three or four of them are impossible crime stories-so he's probably written around 200 of them by now. Many of his stories fall into one of a number of series, and almost all of his series characters have had to face an impossible crime now and then. One of them, Dr Sam Hawthorne, who narrates his stories to his anonymous guest about cases from his early years in practice, encounters nothing but impossible crimes. So far there have been two collections of Hawthorne's cases, Diagnosis: Impossible (1996) and More Things Impossible (2006).

I could clearly have filled this book solely with Ed's baffling mysteries, and certainly felt that only one selection did not do justice to the Imp of the Impossible, especially as Ed has also written the occasional perfect-crime story. So here are two by the Master. The first is a Sam Hawthorne story, followed immediately by a non-series story containing one of Ed's most creative crimes.

Less than a week after the 1942 election that insured a seventh and final term for Sheriff Lens, the Allied invasion of French North Africa began. It was a joyous time for everyone, a sign that we had launched a major ground offensive at last. (Dr Sam Hawthorne paused to refill the gla.s.s of his listener.) It was also a time for war-bond rallies in the cities, when celebrities sometimes came to help raise money for the war effort.

Towns like Northmont ordinarily would not have attracted a war-bond rally on any large scale, but as it turned out we had a local celebrity hardly anyone knew about. The November election brought us a new mayor, Cyril Bensmith, a slender, vigorous man of forty, a bit younger than me. I'd hardly known him before he ran for office, and I didn't know him much better now. His family had a small farm over near the town line, almost into the adjoining township of Shinn Corners, which probably explains why I hadn't heard about him or his boyhood chum Rusty Wagner.

Rusty'd been George Snider at the time. He didn't become Rusty till he moved to New York and landed the villain's role in a mildly successful Broadway play. From there he went off to Hollywood and became Paramount's answer to Humphrey Bogart. He was never as big a star as Bogart, but by April of 1943, with the Allies advancing in Tunisia and many of the younger male stars in the service, Rusty Wagner was doing his part by touring the country selling war bonds. Health problems and his age, just turning forty, had kept him out of the army. When Mayor Bensmith heard he'd be at a rally in Boston he invited his old friend to make a side trip to his hometown.

"Did you hear the news?" my nurse April asked that morning. "Rusty Wagner is coming here for the war-bond drive."

"We don't go to many movies," I admitted, though the town boasted a pretty good theater. "I guess I've seen him once or twice."

"I'm going to help out on the drive," she said. April's husband Andre was away in the service and I could understand her urge to get involved.

"That's good. I'll come and buy a bond from you," I promised.

That night at home I mentioned it to my wife Annabel, who showed a bit more excitement than I had. "That's great news, Sam! Something's finally happening in this town."

I smiled at her remark. "A lot of people think too much happens here already. Our murder rate-"

"I wish you wouldn't blame yourself whenever somebody gets killed in Northmont. I'm sure there were murders here before you ever came to town. I'll have to ask Sheriff Lens when he and his wife come to dinner."

The sheriff had been elected to his first term in 1918, just days before the armistice that ended the war. I hadn't moved to town and set up my practice until a few years later, in January of '22, and for some reason we'd never really talked much about Northmont's past crimes.

We dined with Sheriff Lens and his wife Vera every couple of months, and it was their turn to come to our house two nights later. While Vera helped Annabel with dinner in the kitchen I engaged the sheriff in conversation. "Annabel and I were talking the other night about Northmont's crime rate. How was it before I came here in 'twenty-two? Did you have just as many murders?"

Sheriff Lens chuckled, resting his hand on the gla.s.s of sherry my wife had provided. "Can't say that I remember any at all before you came to town, Doc. Guess you brought 'em with you." He took a sip from the gla.s.s and added, "There was the fire over at the Black Cloister, of course, but no one ever suggested that was murder."

I'd driven past the burnt-out building several times during the past twenty years, wondering why the county didn't just tear it down and sell the land at auction. "Exactly what happened there?" I asked.

"Well, it was in the late summer of 'twenty-one. The place had been built late last century as a sort of farming commune for disenchanted monks and other religious men who'd left their various orders but weren't ready to return to the secular world. Occasionally they took in one or two juvenile offenders if the courts asked them to, on the theory that a hard day's work might set them straight. n.o.body paid much attention to them out there, except about once a month when a couple of them came into town for supplies. They called it the Black Cloister, named for the Augustinian monastery in Germany where Martin Luther lived. After the Reformation the monks moved out but Luther continued to live there, offering shelter to former monks and travelers. Upon his marriage in fifteen twenty-five the building was given to him as a wedding gift."

"You know a good deal about it, Sheriff."

"Well, Vera's a Lutheran even though we were married by a Baptist minister. We got talking about the Black Cloister one night and she filled me in on all that history."

"I heard my name mentioned," Vera Lens said as she came in to join us. "Dinner will be ready in three minutes."

"Doc was just wondering about the Black Cloister," the sheriff explained.

"Funny you should mention that, Sam. We're putting together an antique auction for the war-bond rally and someone donated the ornate oak front door from the Black Cloister. You can see it along with the other antiques down at the town hall."

"Maybe I'll take a look. When is this all going to happen?"

"Next Tuesday, the twentieth. That's the day after the Boston rally. They're tying it in with Patriots' Day and the Boston Marathon." Easter Sunday that year was not until April twenty-fifth, the latest it could be.

We took our seats at the table as Annabel came in with our salads. "I was just talking to Vera about the rally," she told me. "I told her I wanted to help out, too."

"A lot of people are. April at my office said she'd help. There's nothing like a movie star to brighten things up."

"Rusty Wagner isn't exactly a heartthrob," Vera remarked, plunging her fork into the salad. "Sometimes his face looks like it went through a meat grinder."

"He makes a perfect villain, though," Annabel said. "I saw a couple of his films before we were married." Turning to me, she said, "Sam, we have to start going to the movies more."

Somehow the conversation never did get back to the fire at the Black Cloister. It wasn't until Sunday afternoon, two days before the scheduled rally, when I accompanied Annabel to the town hall and stood before the fire-scorched door, that I remembered the burned building. The thick oak door was indeed a thing of beauty, leaning against the wall. Its front showed a bas-relief of a hooded monk kneeling in prayer, and this is what would have greeted visitors to the Cloister.

"You can see the door was badly scorched in the fire," Vera said as she came up to join us. We were in the ornate lobby of the town hall, where a score of items of all shapes and sizes had been a.s.sembled for the auction.

I ran my fingers over the bas-relief, admiring the carving. "Looks as if there are a few little wormholes in it, though," Annabel remarked.

There were indeed, toward the sides and top of the door. I pulled it away from the wall, but the back was smooth and unmarked, without a trace of scorching. "What was the story about this fire?" I asked Vera. "It was before I moved here."

"I was pretty young then myself, but I remember the Cloister as some sort of religious community. There was a fire and one young man died. After that the rest of the community just scattered."

"Who owns the property?"

"I have no idea. Felix Pond at the hardware store donated the door. He said it had been in the family for years, but I don't know that they ever owned the place."

"How does this charity auction sell war bonds?" Annabel asked.

Vera Lens explained. "People bid by purchasing the bonds, so it's not really costing them anything. They get their money back when the bonds are redeemed. The items are all donated and I don't imagine they have any great value. But something like this door could be cleaned up and painted and put to good use. Some church might even like it."

I ran my fingers over the wood once more, again impressed by the workmanship. "I wonder who carved this. Was it someone locally, or perhaps one of the residents at the Black Cloister?"

"It's possible Mayor Bensmith might know."

"I think I'll ask him."

Cyril Bensmith had a dairy farm on the North Road. His tall, gaunt frame reminded some of Abraham Lincoln, though he'd never thought of entering politics until his wife died a few years earlier. They had no children, and perhaps in search of a new beginning he'd run for mayor and been elected handily. He still worked his farm every day. Being mayor of Northmont was not a time-consuming occupation.

He had just arrived at the town hall and was greeting people with a handshake when I went up to him. "How are you, Sam? Good to see you here. I think the rally on Tuesday's going to be a big success."

"It should be," I agreed, "especially with Rusty Wagner's appearance."

"Rusty's an old friend. I haven't seen him in years, but we've stayed in touch."

"I was admiring that door from the old Cloister," I explained, gesturing toward it. "Know anything about it?"

"No more than you. Felix Pond at the hardware store donated it."

"I was wondering if the carving was by a local person."

"I couldn't tell you that. If there's an opportunity you might ask Rusty when he's here Tuesday."

"Rusty?"

"He was living at the Black Cloister at the time of the fire."

"How old would he have been at that time?"

"Eighteen, I think. Same age as me. He and another boy, Fritz, were caught stealing a car in Hartford. The judge suggested they could avoid jail by spending the summer doing farm work at the Cloister and they agreed quickly enough. That's how I got to know Rusty. His name was George then, but he never liked it. We saw a lot of each other that one summer, before the fire."

He moved on to greet others, and I was left with unanswered questions.